Well, that didn't quite go as planned...
Despite 4 Beta and 2 Release Candidate versions of JCE Pro 2.6.0, the final release was definitely not bug free, as the many forum posts and emails you posted and sent pointed out.
I am overwhelmed by your support for JCE Pro 2.6.0 and would like to thank everyone who has reported an issue, confirmed fixes, and of course, bought a JCE Pro Subscription.
JCE 2.6.1 and JCE Pro 2.6.1 have now been released, and I think I have squashed all the bugs reported. If you find another, please post in the forum and I will try to reply with a patch as soon as possible.
Bug Fixes
A list of fixes is available in the Changelog
Download and Installation
JCE Pro is available for download with a JCE Pro Subscription. If you already have a subscription, please make sure you set your key before updating to JCE Pro 2.6.0
Instructions for installing and updating JCE for each Joomla version are available here
JCE can also be updated from previous versions using the JCE Updater in Joomla! 1.5 and 2.5 or using the Joomla! Update Manager in Joomla! 2.5 and 3